Need to rent or borrow garage with facilities

My OB has issues with a transmission sensor - specifically P1706 which I want to examine. The sensor is mounted high on the tail section of the tranny and only visible (just) from underneath. I'd like to get the car on a lift or over a workshop pit. Does anyone know anywhere in the south east (Kent pref) which rents out facilities such as this by the hour, or who would allow me to borrow? Probably need a couple of hours for my examination, maybe longer period if I proceed with repairs once parts have been got. Thanks all.